The charge-dependent Bonn potentials with pseudovector pion-nucleon coupling
Abstract
To apply the high-precision realistic nucleon-nucleon () potentials on the investigations of relativistic many-body methods, the new versions of charge-dependent Bonn (CD-Bonn) potential are constructed within the pseudovector pion-nucleon coupling instead of the pseudoscalar type in the original CD-Bonn potential worked out by Machleidt [Phys. Rev. C 63, 024001 (2001)]. Two effective scalar mesons are introduced, whose coupling constants with nucleon are independently determined at each partial wave for total angular momentum , to describe the charge dependence of scattering data precisely, while the coupling constants between vector, pseudovector mesons and nucleon are identical in all channels. Three revised CD-Bonn potentials adopting the pseudovector pion-nucleon couplings (pvCD-Bonn) are generated by fitting the Nijmegen PWA phase shift data and deuteron binding energy with different pion-nucleon coupling strengths, which can reproduce the phase shifts at spin-single channels and low-energy scattering parameters very well, and provide the significantly different mixing parameters at spin-triplet channels. Furthermore, the -state probabilities of deuteron from these potentials range from to . It demonstrates that these potentials contain different components of tensor force, which will be useful to discuss the roles of tensor force in nuclear few-body and many-body systems.
Cite
@article{arxiv.1909.06013,
title = {The charge-dependent Bonn potentials with pseudovector pion-nucleon coupling},
author = {Chencan Wang and Jinniu Hu and Ying Zhang and Hong Shen},
journal= {arXiv preprint arXiv:1909.06013},
year = {2020}
}
Comments
33 pages, 9 figures, 18 tables, to be published in Chinese Physics C. The source code of potentials can be required to send an Email to hujinniu@nankai.edu.cn